First HP: differential equation solver...

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• First transfer of equation solver HP 50 G to HP

  Hello

  My next question is related to my commonly used work of the equations I have stored on my HP 50 G.

  I use these to solve for an unknown variable - and they use a lot.

  Anyway is to transfer these on the HP Premium?

  If so, how? How do you keep them and where?

  On the HP 50 G, for example, they are in their specific directories - for example

  Home

  | - Circsect

  | - Areas

  | - Circring... 0.7854 x(O^2-I^2) - A = 0 <-find either O. I or

  | - Circular

  | - Rect

  | - Sq

  | - Volumes

  | - Rect

  |- Cyl...................... 0.78540xD ^ 2xL - V = 0 <-find or D; L or V

  | - HollCyl

  | - Cone

  and so on — specific to what we are working on....

  I don't know where to start with this one. Any help would be appreciated ina simplified format.

  Kind regards

  FG

  Before you do a bunch of notes... Hold on!

  Each application has an associated note which is part of the request. Maj APPS is the "Info" button It is a mark of semi protected which is part of the application. What you're trying to do, that's exactly why it exists!

  Why the default is degrees, this is the digital format most commonly used for general mathematics. HOWEVER, you can in your SAVED copy of the application determine whether degrees using SHIFT-SYMB screen mode. This will override the system settings to any time open this application, it will run in mode degrees.

• The first (emulator) HP: HP Premium differential equations

  Hello

  I'm looking a calculator with AC for my electrical engineering studies and just tested

  the first emulator to get a first impresseion.

  But while testing its features, I got some results of unexpectet on differential equations,
  that I would be confirmed on a calculator of real world.

  A simple as equation y' = x

  CODE: desolve (diff (y) = x, x, y)
  
  wait-> x ^ 2/2 + C
  
  First HP-> 1/2 * (x ^ 2 + 2 * C).

  The result is correct, but nobody would write it down in this way, nor would one solve it how works the first.

  A little more difficult equation could not be resolved by the premium: 2 x ^ 3 * (1 + y ^ 2) = y'

  CODE: desolve (2 * x ^ 3 *(1+y^2) = diff (y), x, y)
  
  wait-> y = tan (1/2 * x ^ 4 + C).
  
  First HP-> could not resolve the implicit equation

  It is not an implicit equation, the two WolframAlpha (iOS) and CASES of TI (iOS) could also resolve this one)

  And last but not least: y' * sin (x) = y * ln

  CODE: desolve (diff (y) * sin (x) = y * ln (y), x, y)
  
  wait-> y = e ^ (C * tan (x/2))
  
  First HP-> y = e ^ (sqrt (cos (x) ^ 2-1) / (C * cos (x) + C))

  I don't know what made the CASE here, but there is no reason to use the Pythagorean trigonometric identity.

  Would be nice if someone with a premium could conifrm/refute these results or tell me what I've done
  evil.

  Hello

  The latest version of premium can solve your 2nd test case (desolve ((2 * x ^ 3 *(1+y^2)) = (y'), x, y))

  However, the results for 1 and 3 test cases are the same that you tested.

  I will pass the info to the person who develops the CASE and if all goes well he will be able to improve it.

  Cyrille

• Just me, or is the 50g low in solving differential equations?

  Hi all

  I used Ti-89 s widely in the past, as well as the Ti-NSpire CX CASE and now the 50 g for about 1.5 years. I love some aspects of the 50g (sensation of keys, ease of unit, RPN conversion), but I can't help but notice some areas where it reallllly hangs out of the competition.

  It is an example that I really noticed recently in solving differential equations. So far, several examples I've tried (all immediately resolved by my Ti - 89 and Nspire CX CASE), the 50g smothered on each.

  A very simple example: solve y "= - 9.8, with boundary conditions y (0) = 2.9 and y'(0) = 3.8.  This can be solved by hand in about one minute, but the 50g can't do. If I input ['d1d1Y (X) =-9.8' ' Y (0) = 2.9 ' ' d1Y (0) = 3.8 '] in level 2 on the stack, then 'Y' on a level and then run desolve, it returns "Error: Undefined result.

  I missing something here, or is - this really unable to resolve such a differential equation based? I thought that advanced and 'better' mathematical capacity HP CASE was meant to be one of the reasons why it takes precedence over offers from Ti, but I must say, so far I do not see that.

  Josh

  Hello!

  Try with the exact numbers:

  ["d1d1Y (X) =-49/5 ' ' Y (0) = 29/10 ' ' d1Y (0) = 19/5 '"]

  « Y »

  DESOLVE

  (after SIMPLIFICATION) You'll get years:

  {Y (X) =-(49*X^2-38*X-29)/10}

• Algebraic manipulations of solutions to differential equations

  Hi, guys

  I found the general solution of the differential equation y "-3 t = 1 using the command DESOLVE. I did it manually first and the answer I got was: 1/2 t ^ 3 + 1/2 t ^ 2 + C1t + C2; However, when I do with the calculator that I get is: (2cC0 + t * cC1 2 + t ^ 3 + t ^ 2) / 2.  I tried everything in the ALG menu to get rid of the 2 in the denominator. Nothing has worked.  I'm in Exact, symbolic mode.  Am I missing something?

  Thank you very much!

  Hi!, jc_cfa:

  If you have RPN MODE...

  

  Configure the FLAGS ...

  Function 03-> symb

  Approx. 105 mode on

  Calculator modes

  Number format... STD

  

• differential equation

  Dear Sir

  I am a beginner in labview and I would like to solve two differential equations and field them over time:

  DX1/dt = (G - K * x 1 (t)) /V (t)

  dV (t) /dt = (1/((1-(((G-x1*(K-U))/(G-x0*(K-U)))^((U/(K-U)))-1))*U

  G = 7.8

  U = 0,166

  x 0 = 132

  VO = 432

  K = 2.02

  Could someone please help me and send the block diagram for these two equations.

  The graphs of these two variables have to be reduced over time. The graph of X 1 is of exponential decay.

  Hello Ahmad,

  I made a simple example and put it on our community page.  This example uses our ODE solver vis LabVIEW comes with 8 built in ODE solvers.  These are all linear system solvers.  It seems that your equations are not linear. I suggest using the LaPlace transforms to solve equations.

  Code example

• First HP, equations Solver

  Hello

  I'm having some difficulties with my first HP Calculator. I received early in the week. I use it with my TI - 89 Titanium to see how to compare the different functions. The problem lies in when I tried to use the Solver of equations to solve for a variable uknown. I know that this must back me two responses, one around of 383 and the other around 1410, both of my 89 coming back from these responses, and the solution for my problem is in the back of my book and it lists both here. Does anyone know how to solve this? I think that such a "beast" than the first must be able to do something so simple.

  Thank you

  Hello

  Please try to use nSolve(YourEquation,a=1..nn), while being in CAS mode. (nSolve since looking digital answers)

  Using a = 1.2000 gives a list of {387.092637878, 1410.5095324}. If you think several roots, it's pretty cool to use a range as a guess.

  Make sure that you use lowercase 'a' in the equation in order to avoid the "Bad Argument value", also make sure that the CASE is set to degrees.

  You can also connect to hpmuseum.org where the calculator is at length.

  Hope this helps

• solve the differential equation

  Hello

  I m trying to solve a simple equation using euler vi. But I have not yet. the equation is:

  (T) DH / DT = 1/A *(F-h/R). I m not understand what I need to plug on euler vi. I´v already took a look at the example of ode euler, but I continuously difficult. Please help me. Thank you.

  I guess that your real goal is to learn to use Euler's method as it is a fairly easy to solve analytically ODE.  Here's a quick example.

• System of differential equations to solve a model of BZ reaction

  Hello

  I wrote this little code to visualize the oscillation of the BZ reaction. I expect to see the oscillation as in page 3 and 7 of the link below

  http://home2.fvcc.edu/~dhicketh/DiffEqns/spring2014projects/SilasSchwarz/final/final/bzreaction.PDF

  This work is done in Matlab, and I want to reproduce in Labview with the same settings. But so far I could not see the oscillation.

  Could someone body spot what is wrong with this code?

  See you soon,.

  Zied

  I have noticed that but not had time yesterday to examine it. I've implemented their matlab scripts and it turns out that the constants they give; e, e' and q are in fact 10 ^-n, and not 10 ^ n. A typo in a student newspaper, how rare once I changed that I had the correct plot as shown here:

  

  Attached to the VI. It runs much more slowly than in Matlab, so be warned.

• Questions write equations to existing variables in Hp 50 g

  Hello

  I'm studying for the exams in June and I'm writing long equations in my HP (algebraic, std, degrees, rectangular), but whenever I try to write a new one, if there is a variable with the same name, it displays its value, not the name I typed. I know this may sound confusing, but here's an example:

  • I do an exercise and I'm saving the following equation: A = B + C (for example).
  • I use it and I begin a new fiscal year.
  • In this exercise, I save the equation: B = C * E * R/T, but when I try to save in a variable, it changes the letters B and C for their values. So if I want to solve an equation with different values of B & C I can not because they do not appear on the equation 'solved '.

  I know I can clear all variables before writing a new equation, but it's a pain in the ass, is there a good way to do it?

  Thank you.

  JamesJames wrote:

  I'm studying for the exams in June and I'm writing long equations in my HP (algebraic, std, degrees, rectangular), but whenever I try to write a new one, if there is a variable with the same name, it displays its value, not the name I typed. I know this may sound confusing, but here's an example:

  • I do an exercise and I'm saving the following equation: A = B + C (for example).
  • I use it and I begin a new fiscal year.
  • In this exercise, I save the equation: B = C * E * R/T, but when I try to save in a variable, it changes the letters B and C for their values. So if I want to solve an equation with different values of B & C I can not because they do not appear on the equation 'solved '.

  You not need to use this method to purge.

  your first equation must be entered this way: (use equation writer or the command line)

  "" A = B + C ".

  STO > "EQ1".

  (for this example, when "the equation" was performed for the equation A = B + C, a 8 value was entered for 'B' and a 9 value was entered for 'C')

  NOW THE IMPORTANT STEP...  (this step is not necessary in RPN mode... In RPN mode, simply enter the equation using EQW or line commmand is also normally done)

  When you enter the second equation, this can not be easily done using the equation editor.

  To easily fix the problem to get into the second equation and keeping variables unadulterated into the equation, you must enter the equations on the command line.

  Start with a single quote... This indicates the 50G an equation will be entered

  When you enter the variables that were previously used... put single quotes around these variables...

  for example:

  "« B » = « C » * E * R/T"

  Press ENTER

  your screen should look like this:

  

  now

  STO > "EQ".

  

  Enter "The equation" and the variables used before are shown with their values pre-filled... but all the variable can be changed...

  

  NOTE NOTE: If you want to change the equations in this window, use the right CHOOS button, select another equation in this example, it is called EQ1... (The CHOOS softkey is available only when the equation is highlighted as shown in the screen above)

  Press CHOOS, and see the following:

  

  Select EQ1 and press F6 (OK)

  now, the screen changes:

  

• The Solver RK4 VI has a maximum length of scan?

  I have to solve a differential equation in one of my report, and after adding in a new logic (which decides whether or not to include an additional number in the equation), it stops the execute. The Solver, RK4 VI East-23009 error: error in the right-hand side of the equation. Covering over the stream, I've isolated to two eq'ns: dG/dt and dI1/dt, who both have their own VI in the case of ODE solver. I have all converted to a width of 8, precision channels 12 and I think that my newest additions have exceeded the limit digitization of execution of RK4 screws max. inside, I quickly found that I can't really understand what is happening, so I come to you.

  Some good starting parameters:

  in VariableCluster.ctl, set Xa 100 X (t - 1) de.01, I1(t-1) 10, I2(t-1) a.5

  control.CTL constant, the value weight 80, activate auto of Glucose.

  EDIT: to start execution, run solver.vi ODE which is located in the folder of ODE solver.

  In VD.vi VD is set to the value of the constant of VD Mult (hidden) which by default is zero. Later, this value is used as a divider that produces NaN values in f. I have no idea whether it is what you want, but the NaN will keep it forms solve anything.

  I have not dug down beyond that point.

  Lynn

• Variables in the function MathScript ode solver

  Hello

  I'm using LabView for awhile and I started using the text tools more. To solve a system of differential equations, there is this very elegant tool to do this in a MathScript node with the ode solve algorithms (for example, "ode_adams"). As the LabView help said, I've defined a function and registered as a ".m" file. I loaded this function in mathscript and solve differential equations.

  Both and so good, but my problem is that I can not all variables in the function. I can only put numbers in the function but not variables. Unfortunately I need to define the variables outside the function in the MathScript node.

  Does anyone have an idea how to manage the variables in this case?

  I have attatched a picture of the function and test VI (LV2014).

  Greetings

  Global variables to solve this problem:

  Solution:

  

  Greetings

• model of dynamic system, which is the Solver

  Dear Member

  What labview mean by that word in this helpl http://zone.ni.com/reference/en-XX/help/371894G-01/lvsimconcepts/sim_c_ode/ labview

  "" Because many models of dynamic systems consist of differential equations, you must resolve these differential equations".

  "" Most of the simulations that you create in the LabVIEW Control Design and Simulation Module use solving of ordinary differential equations (EDO).

  Best regards

  Most of the linear systems can be modeled by linear differential equations, which can then be used to create a transfer function that describes how the system acts on an input to create output. Help is just stating that a Solver of ordinary differential equations (EDO) will serve as the default option, to solve the differential equations that make up the transfer function. It will solve the transfer function, probably composed of differential equations, for descrete time step, thus returning the step responses of the system for a given entry.

• The start-up first kernel panics? After Effects after update OSX 10.11.6

  Hello

  Big problems after the update to OSX 10.11.6. Creation/after effects/SOUL (all latest versions) all introduce a kernel with my cMacPro panic them 2012. Computer freezes and goes upward. Photoshop/bridge etc. Start fine. Seems it has something to do with the Adobe Media core. It hangs at that time at the start of AE.

  Reinstalled OSX 10.11.6 updating combo, Reinstalled Adobe app, cleaned cash (Onyx), uninstalled the driver of the black magic. Nothing helps.

  I'm on a Mac Pro 2012 with a NVIDIA GeForce GTX TITAN X 12288 MB (macvid cards) running on the latest driver from NVIDIA. Can it be linked to this driver? Or maybe CUDA? FCPX starts fine and does not use Cuda.

  Anyone having the same problems?

  Enter OSX 10.10.5 startup disk. that should work well.

  Kind regards

  Stephan

  Found the answer in another discussion. Remove the Metal 3 folders first, AE and SOUL solved the problem.

  Thank you

  Stephan

• Some projects won't load does not, first Elements 4

  At first, my projects worked very well. I was in the middle of working on a particular project before decide me, ' Hey, we're going to upgrade the computer!

  Now, some projects simply won't load. I click on the project, and all I get is a blackened by window with the text "user interface initialization" below left. It never initializes.

  It is when I have the chance. Sometimes, all crashes with just a few "the first meeting with a serious error." It does not freeze, cause the program is able to create a backup before its closure, so I think that there is some kind of conflict. But for the life of me, I can't understand it.

  The only thing that is changed from then to now is I now version 64-bit instead of 32-bit windows. Graphics card is the same, the memory is the same, everything is the same. That's all just a new installation of windows.

  It cannot be just a general incompatibility, because some projects take very well. It's completely random those who, although they tend to be small. (a few small projects is loading)

  I had to reinstall first but who usually solves problems not create.

  Some things I've tried:

  Clear cache

  Removal of the preferences

  Relocation of

  Disable hardware acceleration

  programs to disable my anti virus (AVG and Spybot 2.0)

  Compatibility mode for Windows XP service pack 2 AND 3

  Give administrator privileges

  It is the only open application

  politely asked

  This software has been my companion software edition for years. I need to understand what got so weird since the 64-bit update.

  Specifications of the computer:

  Radeon 6670

  8 GB memory

  Windows 7 64 bit

  Processor Intel i5 3401

  ASUS Micro-ATX Motherboard

  All my drivers are up to date. Quick time is updated. Flash is up to date. The Cree program open when the draft takes over and works like a charm. So, what gives?

  Red truck inc.

  I have the first Elements 4 in Windows 7, 8 and 8.1 64bits. No problems. In the properties/Compatibility tab, I leave "run this program in compatibility mode for" unchecked. I have to right click on the first Elements 4, select run as administrator, even though I have worked for a user with the privileges of the administrator account. Then, focus on the angle of permissions a little more.

  With the thought of the possible remains of incomplete install or reinstall, you did just uninstall, ccleaner Cross (parts regular and register of vacuuming), reinstall?

  Is this video card Radeon 6670 only video card that has the computer? Are you on any network? Do you run a system single or dual monitor on your Windows 7 64 bit?

  Just some thoughts for now.

  Later.

  RTA